/* 一般设置 */

html, body {
    margin: 0;
    padding: 0;
  }
  
  html {
    font-size: 10px;
    background-color: #a9a9a9;
  }
  
  body {
    width: 70%;
    margin: 0 auto;
  }
  
  /* 文字排版 */
  
  h1, h2, h3 {
    font-family: 'Sonsie One', 'ZCOOL KuaiLe', cursive;
    color: #2a2a2a;
  }
  
  p, input, li {
    font-family: 'Open Sans Condensed', sans-serif;
    color: #2a2a2a;
  }
  
  h1 {
    font-size: 4rem;
    text-align: center;
    color: white;
    text-shadow: 2px 2px 10px   black;
  }
  
  h2 {
    font-size: 3rem;
    text-align: center;
  }
  
  h3 {
    font-size: 2.2rem;
  }
  
  p, li {
    font-size: 1.6rem;
    line-height: 1.5;
  }
  
  /* 标题布局 */
  
  nav, article, aside, footer {
    background-color: white;
    padding: 1%;
  }
  
  nav {
    height: 50px;
    background-color: #66ccff;
    display: flex;
    margin-bottom: 10px;
  }
  
  nav ul {
    padding: 0;
    list-style-type: none;
    flex: 2;
    display: flex;
  }
  
  nav li {
    display: inline;
    text-align: center;
    flex: 1;
  }

  nav a {
    display: inline-block;
    font-size: 2rem;
    text-transform: uppercase;
    text-decoration: none;
    color: black;
    transition-duration: 200ms;
  }
  
  nav form {
    flex: 1;
    display: flex;
    align-items: center;
    height: 100%;
    padding: 0 2em;
  }
  
  nav a:hover {
    color: white;
    text-shadow: 0 0 10px wheat;
    transition-duration: 200ms;
  }

  input {
    font-size: 1.6rem;
    height: 32px;
  }
  
  input[type="search"] {
    flex: 3;
  }
  
  input[type="submit"] {
    flex: 1;
    margin-left: 1rem;
    background: #333;
    border: 0;
    color: white;
  }
  
  /* 主体布局 */
  
  main {
    display: flex;
  }
  
  article {
    flex: 4;
  }
  
  aside {
    flex: 1;
    margin-left: 10px;
    background-color: #66ccff;
  }
  
  aside li {
    padding-bottom: 10px;
  }
  
  footer {
    margin-top: 10px;
  }